Add function useful for dynamic simulation
Add function useful for dynamic simulation

sorgerlab/belpy,sorgerlab/indra,bgyori/indra,sorgerlab/indra,johnbachman/indra,bgyori/indra,sorgerlab/belpy,bgyori/indra,sorgerlab/indra,sorgerlab/belpy,johnbachman/indra,johnbachman/indra